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Organic Compounds
Proteins
enzymes
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Created by
Lala
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Cards (10)
all
proteins
are
enzymes
but not all
enzymes
are
proteins
What are enzyme?
specialised proteins
large
and
globular
catalyse chemical reactions
What affects
enzymes
?
temperature
pH
Types of
enzyme reactions
:
all
enzymes are
substrate specific
reactions
occur due to the
lock
and
key
method
reactions can be
Catabolic
(tear down) or
Anabolic
(build up)
Enzyme sensitivity to
temperature
:
all
enzymes have an
optimum
temperature
if temperature
increases
past
optimum
=
DENATURATION
if temperature
decreases below optimum
=
DEACTIVATION
Effect of
pH
on
enzyme activity
:
all enzymes have an
optimum pH
where their activity is at its
highest
A
deviation
, whether
higher
or
lower
, will result in
DENATURATION
of the enzyme and a
drop
in enzyme activity
DENATURATION
:
Structural
change in
active site
Irreversible
DEACTIVATION
:
No change
in the
active site
Activity decreases
Reversible
process
Enzyme
Optimum pH
Location
salivary amylase
7
saliva mouth
pepsin
2
stomach
trypsin
8-9
small intestine
catalase
6-8
liver
alkaline solution
9
liver
Temperature
is all
37
degrees celsius because that is our
body temperature